Emerald ash borer confirmed in all Wisconsin counties

By Blake Jackson

The confirmation of the emerald ash borer (EAB) in Burnett County marks a significant milestone in the relentless march of this invasive pest across Wisconsin.

With its presence now confirmed in all 72 counties, the state faces a formidable challenge in protecting its ash tree population.

Originally detected in Ozaukee County in 2008, EAB has gradually expanded its range, posing a severe threat to Wisconsin's diverse ecosystems.

While the insect's impact may vary across the state, its destructive potential remains constant. Ash trees, once a dominant species in many forests and urban landscapes, are particularly vulnerable to EAB attacks.

The life cycle of EAB is insidious. Adult beetles lay eggs on ash trees, and upon hatching, the larvae burrow into the bark, feeding on the vital tissue that transports water and nutrients.

This disruption leads to a slow decline of the tree, culminating in death. The economic and ecological consequences of widespread ash tree loss are substantial.

To combat EAB, a multi-faceted approach is necessary. Early detection remains crucial, as it allows for timely intervention and prevention.

Landowners can play a vital role by being vigilant for signs of infestation, such as bark splitting, D-shaped exit holes, and woodpeckers targeting ash trees.

Consulting with certified arborists or forestry professionals can provide valuable guidance on management strategies.

While the federal government and Wisconsin have lifted regulations on EAB, the battle against this invasive pest is far from over.

Ongoing monitoring, research, and public awareness are essential to mitigate its impact. By working together, communities can implement effective strategies to protect their ash trees and preserve the ecological balance of their forests.

The Wisconsin Department of Agriculture, Trade, and Consumer Protection (DATCP) continues to track EAB occurrences statewide to inform management strategies.

The public can contribute by reporting suspected EAB sightings to the Wisconsin EAB Online Detections map.

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